Hot-water heater for brooders and incubators.



J. F. MAcKAY.

HOT WATER HEATER FOR BROODERS AND INCUBATORSI APPLICATION HLED DEC.16.191a.

1 ,1 61 ,49%. Patented Nov. 23, 1915.

JOHN F. MAQKAY, OF BORDENTOIVN, NEW JERSEY.

HOT-WATER HEATER FOR BROODERS AND INCUBATORS.

Application filed December 16, 1913.

To all whom it may concern:

Be it known that 1, JOHN F. MAoKAY, a citizen of the United States,residing at Bordentown, in the county of Burlington and State of NewJersey, have invented cer tain new and useful Improvements in Hot- WaterHeaters for Brooders and Incubators, of which the following is aspecificatlon,

reference being had therein to the accompanying drawing.

My present invention relates to certain new and useful improvements inhot water heaters for colony brooders and incubators and for otherapparatus requiring an automatic regulation of the heat so that it maybe kept at a proper even temperature.

The object of the invention is to furnish a simple, complete andeflicient draft-regulating appliance for a hot water heater of the classspecified.

The invention, therefore, consists essentially in the construction,arrangement and combination of the various parts substantially as willbe hereinafter described and then more particularly pointed out in theclaims.

In the accompanying drawing illustrating my invention: Figure 1 is a topplan view of my improved hot water heater. Fig. 2 is a side elevation ofthe same in partial section on the line 2, 2 of Fig. 1. Fig. 3 isanother side elevation of my improved hot water heater, the same beingat right angles to the elevation in Fig. 2.

Similar characters of reference designate corresponding parts throughoutthe different figures of the drawings.

-1 denotes the ash pit or base chamber at the bottom of the furnace ofthe heater, the same having the usual door 3. Above the ash pit 1 is afire box 26, generally of a conical form, and having its surroundingwall 2 made hollow so as to furnish a water space, the whole making aboiler which is entered by the pipes 4, 4 leading to the water jacket 2,from which also pass the pipes 5, 5 that carry the water away from thewater jacket. Obviously the pipes 5, 5 lead to the colony brooder,incubator or other device, where it. is desired to apply the heat forpractical use, while the return pipes 4, 4 enable the circulation to becomplete so that the water can flow back again.

to the water jacket 2.

At the top of the fire box 26, 1s a damper 19, carried by a stem 20.This damper 1s Specification of Letters Patent.

Patented Nov. as, 1915.

Serial No. 806,967.

lifted away from its seat 27, formed in the top of the fire box, 26,whenever it is de sired to replenish the fuel, and also. the damper 19serves as a draft damper, as I shall presently explain, to promotecombustion when required. The casing 28 above the fire box 26, providesa damper seat 27 and also furnishes a support for the smoke flue 17 andalso for the door 22, which acts as a check damper to check the burningof the fuel whenever it is desired to allow the fire to die down. pointin the hot water system as, for instance, on one of the pipes 5 throughwhich the water flows away from the boiler, I find t convenient toattach a thermostat, which is acted upon in the usual way by the heat ofthe water in the water system, andby means of this thermostat thevarious doors and dampers for regulating the draft are controlled, andthus the requisite draft supplied can be cut off at the proper time inorder to keep the fire burning as brightly or as slowly as may bedesired to take care of the proper temperature.

The thermostat may be of any suitable construction and usually consistsof the casing 6 connected to the pipe 5 and containlng a spring or otherdevice 8, which operates a rod '7, expanding said rod when the heatincreases, and contracting it when it diminishes. The rod 7 is pivoted.to a lever 9 which isv suitably supported in a housing 29 that providesthe pivotal support, while the other end of the lever 9 is pivoted to anupright rod 10 having connected thereto, near its upper end, an arm 11,which is pivoted in turn to a lever 12, whose fulcrum is a pin 13 on astandard 18 that is supported rigidly on a top frame 28 of the boiler. Aset-screw 30 on the screw-threaded upper end of the rod 10 is employed.to adjust the length of the lever 10 and thus properly regulate themovement of the system of levers. Lever 12 is pivoted to the lower endof a vertical link 14, whose upper end is pivoted to the end of a lever16 fulcrumed at 31 on the upper end of the standard 18. This lever 16isalso pivoted to the stem 20 of the damper l9 and to a rod 24 that isjoined to another rod 21, said rods 21 and 24 occupying a verticalposition. The rod 21 is pivoted to a draft door 25 in the ash pit 1.Also to the rod 21 is pivotally connected an arm 23 pivoted on the frame28 and attached to t some suitablethe check draft door 22. A weight 15is hung on the short end of the lever 16 and serves to counterbalancesubstantially the weight of the dampers 19, 22 and 25.

The operation of the apparatus will be fully understood from theforegoing description of the various parts without need of muchadditional description. It will be clearly seen that as the heat of theWater increases, the action of the thermostat will be to push down uponthe rod 7, thus depressing the outer end of the lever 9 and pulling downon the rod 10, which will oscillate the lever 12 on its pivot 13,thereby raising link l4 and oscillating lever 16, the result of whichwill be to force the damper 19 tightly on its'seat and simultaneouslyclose the damper 25 and open the check draft 22, thereby cutting off thesupply of air and causing the combustion in the fire box to decrease andthe heat to diminish, so that the temperature of the water will dropback. When it isbelow a predetermined point and the cooling water actson the thermostat, the rod 7 Willcontract, pulling upward upon the lever9, and thus raising the rod 10, thereby pulling the lever 12 on itspivot I3 in a direction opposite to that in which it was moved before,and pulling downwardly upon the link 14,- thereby lifting the lever 16and opening the damper'lt), and at the same time closing the check draft22 and opening the'ash pit door 25, which will place the draft doors inthe position in which draft will be permitted, and combustion willthereby be increased until the heat rises again to such 'a degree as torequire action of the thermostat in decreasing it. In this way it willbe seen that an even degree of heat can be maintained and just theproper temperature kept in the brooder or incubator as may be required,and obviously this degree of heat can be regulated by changing theadjustments of the different parts, so that in every caserthe heatingmay be performed which will be best suited for the particular serviceneeded.

II-Iaving thus described my invention, What I claim as new and desire tosecure by Letters Patent, is

1. In a hot Water heater for brooders, incubators and the'like, thecombination of a I boiler, a Water circulating system arranged inconnection therewith, a fire box, an ash pit, a damper in the top of thefire box, a draft door in the ash pit, a leverage system for operatingsaid damper and draft door comprising a vertical rod attached to thedamper, a jointed vertical rod attached to Copies '01 this patent may beobtainegl for the ash pit draft door, a top horizontal lever pivoted tosaid rods, a standard providing a fulcrum for said lever, acounterbalanced weight on said lever, and means whereby said lever isoperated automatically by the hot water as it increases or diminishes intemperature, together with a check draft damper pivotally supported inthe upper part of the boiler, and provided with an arm which is operatedby the jointed arm connected to the ash pit door.

2. In a hot water heater for brooders and incubators, the combination ofa fire box for burning solid fuel, having a feed opening through itstop, said opening serving also as a draft opening, a wall surroundingthe fire box to furnish a water space so as to provide a boiler,circulating pipes leading to and away from the boiler, a thermostatarranged in said water circulating system and actuated by thetemperature of the water, a damper above the fire box having a stem, anash pit, a door attached thereto, a rod pivoted to the door, a lever towhich the thermostat stem is attached, a rod to which the lever ispivoted at the upper end, a lever actuated by said latter lever,connections be tween said lever and the top damper and also the ash pitdoor, and the check draft damper operating simultaneously with thelatter part.

3. In a hot water heater for brooders and incubators, the combination ofa fire box for burning solid fuel having a feed opening through its top,a top plate covering the heater and having a check draft opening, a fluethrough which the products of combustion pass off at the top, a damperfor the fire box feed opening, said damper having a vertical stem, awall surrounding the fire box and providing a boiler space, pipesconnected with said boiler space for circulating water, a check draftdamper pivoted adjacent to the check draft opening and having a' leverarm, an ash'pit below the fire box, a damper on the side thereof, a rodpivoted to the damper, leverage means for jointly actuating the fire boxtop damper, the check draft damper, and the ash pit damper, and athermostatic appliance actuated by the temperature of the water andoperating the aforesaid damper actuating means.

In testimony whereof I aifix my signature in the presence oftwowitnesses.

JOHN F. MkoKAY.

Witnesses: v FRANK TANSAN, E. M. BRYMAN.

five cents each, by addressing the Commissioner of Patents, Washington,D. G.

